Updated at 1.41pm: The father of missing tycoon Teddy Wang Teh-huei told a probate hearing on Tuesday that he and his son were of "one heart and one soul" in their business and personal relationships. Wang Din-shin, 89, testified at the legal battle against his daughter-in-law Nina Wang Kung Yu-sum, that his son was a very competent businessman and he trusted him 100 per cent. He vehemently denied Nina Wang's suggestion that his son lost patience with him and forced him to resign from the Chinachem Group because of huge sums he owed to the Bank of Canton, incurred through stock market speculation. The testimony came on the seventh day of the legal tug-of-war between Mr Wang and his daughter-in-law over his son's estate, which was estimated to be worth several billion dollars. Teddy Wang Teh-huei, 56, was abducted on April 10, 1990 and has not been seen or heard from since. He was declared legally dead on September 22, 1999 by Justice David Yam Yee-kwan. Mr Wang is seeking a declaration that a 1968 will, which was kept in a safe deposit box with the Bank of America (Asia), and names him the sole beneficiary, is valid and duly executed. However, Mrs Wang, who took over as chairwoman of the Chinachem Group, claims a four-page Chinese will, dated March 12, 1990, appoints her as beneficiary and administrator.